[2] Clark attended Carleton University to study journalism, but left for a news job in Montreal.

He was among the first to cover the Ethiopian famine in 1984, was in Berlin in 1989 to witness the fall of the wall, and was the only Canadian reporter in Yugoslavia when NATO launched aerial war against Serbia in 1999.

[5] He had been considered one of the frontrunners to succeed Lloyd Robertson as CTV National News anchor; with his departure coming shortly after Lisa LaFlamme was named Robertson's successor, it was widely speculated that Clark's departure was tied to having been passed over.

In this role he was the inaugural host of the network's Sunday morning political talk show The West Block.

Global News announced Clark would retire as of January 1, 2017, ending his 40-plus year career in journalism.